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Hop, Haakon; Wiencke, Christian; Vögele, Barbara; Kovaltchouk, Nikolaj A (2012): Fresh biomass of macroalgae collected at Hansneset, Kongsfjorden, Spitsbergen in 1996/1998. PANGAEA, https://doi.org/10.1594/PANGAEA.864321, Supplement to: Hop, H et al. (2012): Species composition, zonation, and biomass of marine benthic macroalgae in Kongsfjorden, Svalbard. Botanica Marina, 55(4), 399-414, https://doi.org/10.1515/bot-2012-0097

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Abstract:
We surveyed macroalgae at Hansneset, Blomstrand in Kongsfjorden, Svalbard, down to 30 m depth between 1996 and 1998. In total, 62 species were identified: 16 Chlorophyta, 25 Phaeophyceae, and 21 Rhodophyta. The majority of species (53.5%) belonged to the Arctic cold-temperate group, followed in frequency by species distributed from the Arctic to the warm-temperate region (25.9%). Four endemic Arctic species (Laminaria solidungula, Acrosiphonia flagellata, A. incurva, and Urospora elongata) were found. Two species (Pogotrichum filiforme and Mikrosyphar polysiphoniae) were new to Svalbard. Chlorophyta, Phaeophyceae, and Rhodophyta extended from the eulittoral zone down to 11, 21, and >30 m depths with maximum biomasses at 1-5 m, 5-10 m, and 5-30 m depths, respectively. Annual and pseudoperennial species had highest biomasses in the upper 5 m, while perennials were distributed deeper. The highest biomass (8600 g/m**2 wet weight) at 5 m depth comprised mainly L. digitata, Saccorhiza dermatodea, Alaria esculenta, and Saccharina latissima. The biogeographic composition of macroalgae at Hansneset was rather similar to that of northeastern Greenland, but different from that of northern Norway, which has a higher proportion of temperate species. Climate warming and ship traffic may extend some of the distribution ranges of macroalgae from mainland Norway to Svalbard.
Coverage:
Latitude: 78.985100 * Longitude: 11.965900
Minimum DEPTH, water: 0.0 m * Maximum DEPTH, water: 30.0 m
Event(s):
Hansneset * Latitude: 78.985100 * Longitude: 11.965900 * Elevation: 5.0 m * Location: Kongsfjorden, Spitsbergen, Arctic * Device: Sampling by diver (DIVER)
Comment:
replicate a: transect taken by Barbara Voegele: Late May-mid July 1996replicate b,c: transect taken by Haakon Hop: 26 August to 10 September 1996 and 14 August to 10 September 1998
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1DEPTH, waterDepth watermHop, HaakonGeocode
2ReplicateReplicateHop, Haakon
3Acrosiphonia spp., biomass, wet massAcrosiphonia spp. biom wmg/m2Hop, HaakonQuantitative frame samplingincluding Spongomorpha spp. - annual
4Pylaiella littoralis, biomass, wet massP. littoralis biom wmg/m2Hop, HaakonQuantitative frame samplingannual
5Fucus distichus, biomass, wet massF. distichus biom wmg/m2Hop, HaakonQuantitative frame samplingperannual
6Chorda filum, biomass, wet massC. filum biom wmg/m2Hop, HaakonQuantitative frame samplingannual
7Chordaria flagelliformis, biomass, wet massC. flagelliformis biom wmg/m2Hop, HaakonQuantitative frame samplingannual
8Dictyosiphon foeniculaceus, biomass, wet massD. foeniculaceus biom wmg/m2Hop, HaakonQuantitative frame samplingannual
9Haplospora globosa, biomass, wet massH. globosa biom wmg/m2Hop, HaakonQuantitative frame samplingannual
10Alaria esculenta, biomass, wet massA. esculenta biom wmg/m2Hop, HaakonQuantitative frame samplingperannual
11Laminaria digitata, biomass, wet massL. digitata biom wmg/m2Hop, HaakonQuantitative frame samplingperannual
12Laminaria saccharina, biomass, wet massL. saccharina biom wmg/m2Hop, HaakonQuantitative frame samplingperannual
13Laminaria solidungula, biomass, wet massL. solidungula biom wmg/m2Hop, HaakonQuantitative frame samplingperannual
14Laminaria spp., young, biomass, wet massLaminaria spp. young biom wmg/m2Hop, HaakonQuantitative frame samplingperannual
15Saccorhiza dermatodea, biomass, wet massS. dermatodea biom wmg/m2Hop, HaakonQuantitative frame samplingannual
16Desmarestia aculeata, biomass, wet massD. aculeata biom wmg/m2Hop, HaakonQuantitative frame samplingperannual
17Desmarestia viridis, biomass, wet massD. viridis biom wmg/m2Hop, HaakonQuantitative frame samplingperannual
18Devaleraea ramentacea, biomass, wet massD. ramentacea biom wmg/m2Hop, HaakonQuantitative frame samplingincluding Elachista fucicola - perannual
19Odonthalia dentata, biomass, wet massO. dentata biom wmg/m2Hop, HaakonQuantitative frame samplingannual
20Ptilota gunneri, biomass, wet massP. gunneri biom wmg/m2Hop, HaakonQuantitative frame samplingperannual
21Callophyllis cristata, biomass, wet massC. cristata biom wmg/m2Hop, HaakonQuantitative frame samplingannual
22Phycodrys rubens, biomass, wet massP. rubens biom wmg/m2Hop, HaakonQuantitative frame samplingperannual
Size:
440 data points

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